Tank heater



se t. 18, 1923.

v 1,468,561 H. A. FRIEND TANK HEATER Originai Filed Aug. 7, 1920 Fig.1.

WITNESS:

ATTORNEY Patented Sept. 18, 1923.

I-IARDY FRIEND, 01 ALBERT LEA, MINNESOTA.

TANK HEATER.

Application filed August 7, 1920, Serial No. 401,923.

To all whom it may concern:

Be it known that I, HARDY A. FRIEND, a citizen of the United States, residingat Albert Lea, in the county of Freehorn, and State of Minnesota, have inventedfnew and useful Improvements in Tank Heaters, of

- which the following is a specification.

This invention relates to tank heaters wherein the heater is submersed and of a peculiar formation to afford a large heating area or surface, and in addition to provide a circuitous passage for the heat, whereby thelatteris maintained within the tank an appreciable time before passing outof' the chimney, thus heating the-water in quick order for drinking purposes, as well-as pre venting freezing ofthe water over night.

To these ends, I provide the, heater with an exhaust flue designed to cause the heat to pursue a zigzag passage frointhe combustion'chamber to the chimney, the flue being designed to provide a pocket in which the heatis'c-hokedto some extent, thus forcing Y the-heat to remain-in the pocket an appreciable time before passing into the chimney, this pocket forming with the heat flue, a water space opening at both sides of-the flue, which promotes circulation of the water about the heater, thereby subjecting all parts in the entire area of the heater to the water so as'to quickly heat the same to the proper temperature for drinking purposes.

Another objectof the invention resides in the provision of a removable grate which is provided with: a handle of suitable length to facilitate the insertion of the grate within the combustion chamber or its removal therefrom when the occasion requires.

The nature and advantages of the invention will be better understood when the following detail description is read in connection with the accompanying drawings, the invention residing in the construction, combination and arrangement of parts as claimed.

In the drawings forming part of this application like numerals of reference indicate similar parts inthe several views and wherein:

Figure 1 is a sectional view through a tank showing the heater in side elevation in posi- Figure 2 is a vertical sectional view through the tank and heater.

The heater forming the subject matter of my invention includes a plurality of units 1n an upward Renewed April 6, 1923.

10, 11 and 12 respectively, which may be cast into a one-piece construction, or made up of separable parts connected together in any suitable'manner. 10 indicates the body portion of the heater which is of substantially tubular formation in cross section and constitutes the combustion chamber. which is arranged between the units 11 and 12 respectively. The unit 11 represents a cold air pipe which is-coextensive in length with the body portion 10 of the heater, being spaced therefrom for the major portion of its length, this pipe being of increased width,

at its lower end which is offset asat 13 where it joins the main body portionlO. Both the main body portion 10 and the cold air pipe 11 are provided with movable closures 14c, and each equipped with a damper 15 for regulating the draft. The unit 12 constitutes the heat .flue which terminates flush with the upper end of the main body portionl'O, but which has associated there with one or more ipes 16 constituting the chimney. Asclearl y shown in the, drawings, both, the cold air pipe 11 and the heat flue 12 are spaced from the main body portion 10 of the heater, .SOljllfll] the entire area of the latter, as well as the heat fine is presented to the water or contents of the tank A.- The heat flue 1 2 communicates with the body portion 10 at communication between the cold air pipe 11 and the body of the heater, and as clearly illustrated the heat flue 12 widens from an appropriate point in its length to its point ofconnection with the body portion. as at 17. As shown in this specific instance, the heat flue projects horizontally from the body portion 10 and is then curved upwardly and downwardly to provide what I term a heat pocket 18, the flue being further continued direction as at 19 in spaced parallel relation to the body portion 10. The vertically disposed portion from its point of juncture with the heat pocket 18 is gradually reduced toward its upper end as at 20 for the purpose of choking the heat to some extent, and thus causing the heat to remain an appreciabe length of time in the pocket 18 before passing into the chimney 16. This obviously provides for a quick heating of the Water within the tank A. In addition to the units 11 and 12 being spaced from the body portion 10 for the purpose above mentioned, it will be further noted that the inwardly and downwardly curved a point above theupoint of ,18 is spaced 7 portion of portion of the heat flue forming the pocket the flue which leads from the body portion 10, thus providing a water space 21 which opens "at both. sides of the flue 12, for the expressed purpose of promoting circulation'of water about the flue 12-and also about the body portion 10 of the heater. By reason of the space 21 all sides of the heat flue throughout the entire length of the-latter are presented to the water so that theheater in its entirety affords a maximum heating surface or area'for the purpose lntended. It 1s of course to be understood that the heat flue 12 may vary in shape and configuration in carryingthe principle of the invention into effect.

In Figure 2 I have shown inconjunction with the invention, this grate is an ash pan .24 an opening in being indicated at 22 and includinga bottom, side and end walls to receive and support the, fuel which may be'coal, wood or cobs. Depending-from the bottom of the grate are supportinglegs 23 which maintain" the bottom of the grate in spaced relation to the bottom ofithe main bodyportion 10 of the heater. Arranged beneath the grate which is. removable through the wall of the combustion chamber, this openingbeing normally closed by the front wall of .theash pan. A handle 25 rises from the grate and is of sufficient length for the convenience of handling the grate when placingthe, latter within the therefrom. This handle terminates to 'providea finger receiving'ring 26, which when the grate is in positionfor use, 7 I immediately beneath the upper edge of the e and is admitted to the under the grate 22.

is arranged main body portion 10. 1 i

' In practice, the cold air is conveyed to the combustion chamber through combustion chamber The draft may be regulated by means of the dampers 15. The

heat,passes f romthe combustion chamber from the horizontally disposed the grate used combustion chamber or removing the grate the pipe 11,

into the horizontally disposed portion of the flue 12 which communicates with the com- 'bustion chamber at a point immediately 1 maintained within the heater for a' considerable length of time, but as above stated, the passage for the water between the horizontally disposed portionof the flue 12'and the pocket 18 causes the'water to circulate much faster around the entire area of the flue 12 and. the main body portion 10, than it would otherwise. j V m l I WVhile it is believed that from the foregoing description-the nature and advantages of the invention' will be readily apparent,

70, I desire to have it understood that I do not 7 limit myself to what is herein shown and described,and that such changesma-y be resorted to when desired as fall within'the scope of what is claimed; I

Whatlclaim'is: Y A stock tank heater comprising a Vertical tubular combustion chamber, a verticalcold air pipe 'spacedfrom said heater and communicating with the bottom thereof, closures'pivotally secured to. the upper ends of said chamber and provided with dampers, a

square horizontal flue extending from said combustion chamber, bentlupon itself to provide a heat retaining pocket and provided with a circular vertical upper end, an ash from one side of said grate. V e

In testimony whereof I aflix my signature.

HARDY a, FRIEND.

pan removablypositioned in said 'combust1on';chamber, a grate supported upon said ash pan, and a vertical handleextending 

